What's Hot: Very slim and light, quick charging and most of all very portable.

What's Not: Small capacity for long road trips.

Reviewed by Tong Zhang

Proporta offers several external battery packs in the Turbo Charger series. The Pocket Power charger is the smallest and lightest one that can fit anywhere in your gear bag or even in your wallet. The Proporta TurboCharger Pocket Power Emergency Charger and External Battery Pack is a rechargeable battery in 680 mAh capacity and comes with a built-in micro USB output and a short USB/micro USB input charging cables. The small charger is meant for use as an emergency top-up for your smartphone and smaller sized ebook readers and tablets.

Design

The Proporta TurboCharger Pocket Power Emergency Charger and External Battery Pack is smaller than a regular business card. Measuring 3.9 x 2.13 x 0.27 inches, you can easily slide it into your pocket, a bag or gear bag. In face, it's the size of a credit except it's thicker. You can probably find a slot in your wallet to store the battery pack. As with most Proporta's battery packs, the Pocket Power has a soft touch surface.

The Proporta TurboCharger Pocket Power battery pack has a very functional design. The battery pack comes with a micro USB output connecter with a short cord. You can plug the battery pack into your device and charge it without carry any additional cable. There is a micro USB port on the Pocket Power charger for recharging the battery pack, and the Proporta comes with a short USB/micro USB cable for charging, or you can just use your smartphone cable to charge the battery pack. The TurboCharger Pocket Power has a LED light button that works as a power on/off button as well as LED indicator light. There are three blue LEDs indicating the battery level and when you hold down the button to turn the battery on, the clear button will turn blue.

Features

The TurboCharger Pocket Power Emergency Charger and External Battery Pack can charge mobile devices including smartphones, tablets, ebook readers and MP3 players, with supported output power. The battery pack takes input of 500mA in 5V and outputs 600mA in 5V. We tested it with several smartphones including the Samsung Galaxy S III, the iPhone 4S, the Motorola Droid RAZR HD as well as 7" tablets including the Nexus 7, and the battery charged them all fine.

The Proporta Pocket Power Charger isn't meant to double the battery runtime on your devices but as an emergency power to finish a conversation or a movie at the end of the day or a trip. The built-in 680mAh battery takes less than 2 hours to fully charge via a computer, and it dumps power to your smartphone or tablet speedily, usually within an hour. The Proporta Pocket Power tops up the Galaxy S III by 23-percent, the iPhone 4S by 34-percent, the Kindle 4 by 50-percent and the Google Nexus 7 by 11-percent.

Conclusion

The Proporta TurboCharger Pocket Power Emergency Charger and External Battery Pack is a super portable external battery pack that you can store anywhere while on the road or for daily use. The battery pack weighs only 1.2 oz. but provides enough power for a couple of more hours of talk time or get you through the last bit of your movie. The battery pack has convenient LED lights to indicate battery level and automatically turns off when it's not in use. The battery pack has a built-in micro USB cable to work with smartphones and tablets with micro USB charging connector, and it also comes with an Apple 30-pin connection adapter for the iPhone 4S and previous models. No Lightning adapter is available yet.